/*
 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 *
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 *
 */

package javax.swing;


/**
 * Constants used with the JScrollPane component.
 *
 * @author Hans Muller
 */
public interface ScrollPaneConstants {

  /**
   * Identifies a "viewport" or display area, within which
   * scrolled contents are visible.
   */
  String VIEWPORT = "VIEWPORT";
  /**
   * Identifies a vertical scrollbar.
   */
  String VERTICAL_SCROLLBAR = "VERTICAL_SCROLLBAR";
  /**
   * Identifies a horizontal scrollbar.
   */
  String HORIZONTAL_SCROLLBAR = "HORIZONTAL_SCROLLBAR";
  /**
   * Identifies the area along the left side of the viewport between the
   * upper left corner and the lower left corner.
   */
  String ROW_HEADER = "ROW_HEADER";
  /**
   * Identifies the area at the top the viewport between the
   * upper left corner and the upper right corner.
   */
  String COLUMN_HEADER = "COLUMN_HEADER";
  /**
   * Identifies the lower left corner of the viewport.
   */
  String LOWER_LEFT_CORNER = "LOWER_LEFT_CORNER";
  /**
   * Identifies the lower right corner of the viewport.
   */
  String LOWER_RIGHT_CORNER = "LOWER_RIGHT_CORNER";
  /**
   * Identifies the upper left corner of the viewport.
   */
  String UPPER_LEFT_CORNER = "UPPER_LEFT_CORNER";
  /**
   * Identifies the upper right corner of the viewport.
   */
  String UPPER_RIGHT_CORNER = "UPPER_RIGHT_CORNER";

  /**
   * Identifies the lower leading edge corner of the viewport. The leading edge
   * is determined relative to the Scroll Pane's ComponentOrientation property.
   */
  String LOWER_LEADING_CORNER = "LOWER_LEADING_CORNER";
  /**
   * Identifies the lower trailing edge corner of the viewport. The trailing edge
   * is determined relative to the Scroll Pane's ComponentOrientation property.
   */
  String LOWER_TRAILING_CORNER = "LOWER_TRAILING_CORNER";
  /**
   * Identifies the upper leading edge corner of the viewport.  The leading edge
   * is determined relative to the Scroll Pane's ComponentOrientation property.
   */
  String UPPER_LEADING_CORNER = "UPPER_LEADING_CORNER";
  /**
   * Identifies the upper trailing edge corner of the viewport. The trailing edge
   * is determined relative to the Scroll Pane's ComponentOrientation property.
   */
  String UPPER_TRAILING_CORNER = "UPPER_TRAILING_CORNER";

  /**
   * Identifies the vertical scroll bar policy property.
   */
  String VERTICAL_SCROLLBAR_POLICY = "VERTICAL_SCROLLBAR_POLICY";
  /**
   * Identifies the horizontal scroll bar policy property.
   */
  String HORIZONTAL_SCROLLBAR_POLICY = "HORIZONTAL_SCROLLBAR_POLICY";

  /**
   * Used to set the vertical scroll bar policy so that
   * vertical scrollbars are displayed only when needed.
   */
  int VERTICAL_SCROLLBAR_AS_NEEDED = 20;
  /**
   * Used to set the vertical scroll bar policy so that
   * vertical scrollbars are never displayed.
   */
  int VERTICAL_SCROLLBAR_NEVER = 21;
  /**
   * Used to set the vertical scroll bar policy so that
   * vertical scrollbars are always displayed.
   */
  int VERTICAL_SCROLLBAR_ALWAYS = 22;

  /**
   * Used to set the horizontal scroll bar policy so that
   * horizontal scrollbars are displayed only when needed.
   */
  int HORIZONTAL_SCROLLBAR_AS_NEEDED = 30;
  /**
   * Used to set the horizontal scroll bar policy so that
   * horizontal scrollbars are never displayed.
   */
  int HORIZONTAL_SCROLLBAR_NEVER = 31;
  /**
   * Used to set the horizontal scroll bar policy so that
   * horizontal scrollbars are always displayed.
   */
  int HORIZONTAL_SCROLLBAR_ALWAYS = 32;
}
